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Charging the Tf300 (only charges through original charger?)

I've been playing with my Tf300 for a week now.
This weekend I wasn't home and wanted to charge it. It didn't work.
I tried four different chargers including an iPad one, two Griffins, one belkin with no luck.
I have the original cable and two generic ones I bought from Amazon.
All cables work with the original charger... But NONE (even the original one) works with other chargers.
Any ideas if this is wrong?
I would hate to buy a new charger instead of only taking with me any cable with any of the other chargers I own.
Anyone with the same experience? Why is only the original charger working?

Noticed the same thing.
Sent from my ASUS Transformer Pad TF300T using xda premium

Noticed that with the car chargers as well
Sent from my ASUS Transformer Pad TF300T using xda premium

Forgot to mention that I also tried with two car chargers (Kensington and Griffin) with no luck

I'm no electronics expert but I noticed that on my Phone charger (Xperia Mini Pro) it says 850mA, but on the tablet's charger it says 2A. I think that other chargers dont pack enough punch to charge the tablet.

I used an iPad charger with no luck... The car chargers I used all have worked with my iPad.
Anyway, it seems that it's not only mine then.
Now I wonder if there's a work around for this... Besides buying a new original charger

Damn chargers are $30
Sent from my SGH-T989 using XDA

you can charge your device with a "not compatible" charger if the tablet is turned off. for me it worked with the charger of my galaxy nexus but it charges really slow

FallinHigh said:
you can charge your device with a "not compatible" charger if the tablet is turned off. for me it worked with the charger of my galaxy nexus but it charges really slow
Click to expand...
Click to collapse
Thats good to know
Sent from my SGH-T989 using XDA

I read other articles about charging TF300T. For normal charging the charger must have output at least 11v (12v is usual) and 1.5A (18Watts). Its own charger has 15v 1.2A (18Watts).
iPad charger out only 5v 2.1A. TF300 could be charged with iPad charger but the screen must be off (and it will be very slow, overnight for an 1-2 hr normal charge). So check your charger output voltage and amperage. Thank you.

But doesn't have the charger of the TF300T 5V/2A?
I noticed it on my car charger, but it only has 5V/1A. So the tablet does nothing, even when it is turned off.
It only charges with the original charger.
But I assume other chargers with at least 2A should work without any problems, right?

Jake2kOne said:
But doesn't have the charger of the TF300T 5V/2A?
I noticed it on my car charger, but it only has 5V/1A. So the tablet does nothing, even when it is turned off.
It only charges with the original charger.
But I assume other chargers with at least 2A should work without any problems, right?
Click to expand...
Click to collapse
The tf300 charger is not 5V, its either 12V or 15 V (can't remember which). This is why you see nothing. if the only difference was the current (1A Vs 2A) You would still get a charging notification, it would just take longer. The difference in voltage means It should not be able to charge at all off of a normal usb connection.

http://www.ebay.com/itm/US-POWER-AD...?pt=US_Tablet_Accessories&hash=item4d00ab2fac
Saw that guy on ebay for $13. Think it would work?

TXKSSnapper said:
The tf300 charger is not 5V, its either 12V or 15 V (can't remember which). This is why you see nothing. if the only difference was the current (1A Vs 2A) You would still get a charging notification, it would just take longer. The difference in voltage means It should not be able to charge at all off of a normal usb connection.
Click to expand...
Click to collapse
the tablet gets charged on a normal usb port it just doesnt tell you its being charged and it take quite a while to fully charge up

BierLiebHaber said:
the tablet gets charged on a normal usb port it just doesnt tell you its being charged and it take quite a while to fully charge up
Click to expand...
Click to collapse
I haven't seen it charge any when i've plugged it in to my computer via usb. but it could be that I don't have the patience to wait long enough.
---------- Post added at 01:07 PM ---------- Previous post was at 01:05 PM ----------
xAshxMoneyx said:
http://www.ebay.com/itm/US-POWER-AD...?pt=US_Tablet_Accessories&hash=item4d00ab2fac
Saw that guy on ebay for $13. Think it would work?
Click to expand...
Click to collapse
yes, but it will be slower than with the charger it came with. that charger only has a 1.2A output as compared to the 2A of the stock charger.

the tablet gets charged on a normal usb port it just doesnt tell you its being charged and it take quite a while to fully charge up
....
I haven't seen it charge any when i've plugged it in to my computer via usb. but it could be that I don't have the patience to wait long enough.
Click to expand...
Click to collapse
Everywhere I read, people have said that it does not trickle charge at all via usb. Can someone confirm this?

Okay, I can confirm that the TF300T charges at 15V/1.2A.
Both, the tablet and the dock uses 15V. None uses 5V.
I was confused because it's USB. For this purpose it can transform to 5V/2A. But this is not for the tablet.
So I think it's not possible to charge it on a normal USB port.

Has anyone tried using a USB extension cable? I tried one on my Tf300 and it wouldn't charge, no matter what the table arrangement was. It would only charge off its own charger and with only its own USB cable in the USB charger.

At a guess, i'd expect it's because the ASUS charger outputs 15V so the charger or cable will be wired differently to a normal USB lead in order to prevent blowing normal USB devices if you connected them.

USB 3
I can't remember where, but I read that this needs to use USB3 cable. Sorry if this is not the case.

About AC adapter and its amperage

Hi all,
Ok, so I finally managed to order a 16Gb Nexus 4 and hopefully it will be with me in 1 week or so.
And I was wondering one thing regarding the AC adapter: I believe (pls correct me if I am wrong) that the original AC adapter’s output voltage is DC 5V, 1.2A.
I will need an extra AC adapter to keep it at work and I was planning to use one of those:
- The Sony Xperia P AC adapter will output 5V, 1,5A
- The Samsung Galaxy S AC adapter will output 5V, 0,7A
It is clear that neither of those 2 chargers will match exactly the specifications of the original Nexus charger (same voltage, but different amperage).
So, here goes the questions:
1) Is there any problem if I use a charger that will output the same voltage but with different amperage?... if not, which one would you use and why?.
2) how the amperage affect to the charging process?.
Thanks all in advance
PS: sorry for terrible English

You can use any charger up to 2 amps.
Sent from my Nexus 4 using xda app-developers app

Evergreen74 said:
Hi all,
Ok, so I finally managed to order a 16Gb Nexus 4 and hopefully it will be with me in 1 week or so.
And I was wondering one thing regarding the AC adapter: I believe (pls correct me if I am wrong) that the original AC adapter’s output voltage is DC 5V, 1.2A.
I will need an extra AC adapter to keep it at work and I was planning to use one of those:
- The Sony Xperia P AC adapter will output 5V, 1,5A
- The Samsung Galaxy S AC adapter will output 5V, 0,7A
It is clear that neither of those 2 chargers will match exactly the specifications of the original Nexus charger (same voltage, but different amperage).
So, here goes the questions:
1) Is there any problem if I use a charger that will output the same voltage but with different amperage?... if not, which one would you use and why?.
2) how the amperage affect to the charging process?.
Thanks all in advance
PS: sorry for terrible English
Click to expand...
Click to collapse
You must use a 5V AC USB Adapter and better no LESS than 1A
for Fast Charge.
AC Adapter I Use:
iPad AC Adapter 5V 2.1A at Work
PlayBook AC Adapter 5V 1.8A at Home 1
Original Nexus 4 AC 5V 1.2A at Home 2.
Our Nexus 4 will Draw around 0.8A when Batt lever at 0% - 80%,
then around 0.5A at 80%-95%, Final State 95%-100% will draw 0.2A roughly.
When 100%, Nexus 4 will use the AC power & the Current "A" show on phone
will like 2mA (0.002A) when idling.
** 1A = 1000mA

As previous poster said, do not go under 1.2amp.
I run the OEM charger in my bed room, a USB charger to my computer, and a 2.1amp charger in the car.

Sfkn2 said:
As previous poster said, do not go under 1.2amp.
I run the OEM charger in my bed room, a USB charger to my computer, and a 2.1amp charger in the car.
Click to expand...
Click to collapse
Why do you say not to go under 1.2A? Charging from a laptop is at .5A. I've been using a 1A charger since day one. Haven't experienced any issues with it.
Charging at a lower amperage shouldn't hurt anything, just charge slower. All you have to do is make sure it's a 5V charger. Amperage shouldn't matter but a lower amp charger will charge slower. As for a higher amp charger, the phone will only draw the amount of power it needs to charge so using 2A charger won't hurt anything either.

Also 2mA is 0.002A not 0.02 A

wilsonlam97 said:
You can use any charger up to 2 amps.
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
Since the charger doesn't actually regulate the charging itself (the phone does this) it doesn't matter how many amps it can supply, could be 100 amps, no worries. As long as it is 5V, the phone will draw as many amps as it needs.
Since the supplied charger is 1.2A rated, it's fair to assume that the phone will never actually try to draw any more than that, so there will be no benefit in going higher.
Going for a lower current charger will likely extend the charge time.

I use a 2.1 amp daily without any issues.
Sent from my Nexus 4 using Tapatalk 2

Wow guys!!... thanks all for your answers!!
So, if I understood correctly, the amperage will only affect to the charging time, meaning that by using the Xperia P AC adapter (1,5A) the battery will be charged faster that using the Galaxy S one (0,7A)... right?
Pls allow one last question: a few yeard ago, I think I read in some forums that a slower charging process could help to keep the batteries in the best conditions for a longer time... is this still true with modern batteries??
Again, THANKS all for your help!!

Evergreen74 said:
Wow guys!!... thanks all for your answers!!
So, if I understood correctly, the amperage will only affect to the charging time, meaning that by using the Xperia P AC adapter (1,5A) the battery will be charged faster that using the Galaxy S one (0,7A)... right?
Pls allow one last question: a few yeard ago, I think I read in some forums that a slower charging process could help to keep the batteries in the best conditions for a longer time... is this still true with modern batteries??
Again, THANKS all for your help!!
Click to expand...
Click to collapse
Yes, the .7A charger will take a little longer to charge you phone.
On the other answer, I think NO but I'm not as familiar with LiPo batteries. I would venture to say that .7A vs 1.2A (max the phone will draw but I think someone above mentioned it's even less than that when the battery is very low) is not going to make a bit of difference in your battery life.
One thing I do know about LiPo's is you do not trickle charge them. So while plugged in it will charge at the rates mentioned above until full and then it QUITS charging all together. Once the phone discharges the battery to a certain level, it will charge it back up again. Probably at 98-99%.

There may be one other thing to consider when selecting a third party charger. In the Nexus 7, the device looks for pins 2 & 3 (data) of the USB plug to be shorted in order for it to draw full current. If this pins are open (or have a load across them as is the case with iPhone/iPad chargers), the Nexus 7 will assume it is plugged into a computer and limit its draw to 500MA.
Not certain the Nexus 4 behaves the same way but would assume so.

setzer715 said:
Yes, the .7A charger will take a little longer to charge you phone.
On the other answer, I think NO but I'm not as familiar with LiPo batteries. I would venture to say that .7A vs 1.2A (max the phone will draw but I think someone above mentioned it's even less than that when the battery is very low) is not going to make a bit of difference in your battery life.
One thing I do know about LiPo's is you do not trickle charge them. So while plugged in it will charge at the rates mentioned above until full and then it QUITS charging all together. Once the phone discharges the battery to a certain level, it will charge it back up again. Probably at 98-99%.
Click to expand...
Click to collapse
setzer715, thanks for the answer... I think I will be using the Xperia P charger at work...
Thanks all for your help!!

I want to make this case clear. According to my Charging log,
Here is some key point.
Nexus 4 Max Draw Rate at Fast Charge Mode is around 800-900mA,
even you use a Charger that rated at 1A (iPhone Tofu), 1.2A (Original),
1.8A (Playbook), 2.1A (iPad).
Fast Charge Mode must be with Charging Cable with 2&3 pin Shorted,
or the charger itself have the 2&3 pin already shorted.
Therefore, 1A is a Sweet spot for getting Charger & Charging Time for
Li-Po/Li-Ion/Ni-MH Batt charging.
If you use under 1A Charger, eg 700mA or 500mA, it will take much longer
to charge the batt but no harm as well. Just too slow only.

The stock charger that came with my phone sucks, I use one from my epic 4g touch (gs2)and it charges much better
DEVICE: Nexus 4
KERNEL: Franco r95
ROM: PROJECT Extinct Life Event

jlear3 said:
The stock charger that came with my phone sucks,
Click to expand...
Click to collapse
Why you say so...? What's wrong with it...?

Talon88 said:
Why you say so...? What's wrong with it...?
Click to expand...
Click to collapse
Left a phone on a charger all night with a long (10ft) cable and it couldn't even charge the phone over night. I know a 10ft cable will slow things down but my gs2 plug has no problem charging my phone. Search around and you'll find a few fail stories about the stock LG charger.
Sent from my Nexus 4 using Tapatalk 2

S4 comes with 2A charger while S3 with 1A charger, can I interchange?

Hello,
Just noticed that S4 comes with 2A charger while S3 come with 1A charger. I have place where I charge a bunch of different devices in the house which has micro-USB port and all of them are using 1A. I'm wondering what repricussions I can have if I add 2A charger to the mix and will charge old devices with 2A charger and vice a versa charge S4 with 1A?

artisticcheese said:
Hello,
Just noticed that S4 comes with 2A charger while S3 come with 1A charger. I have place where I charge a bunch of different devices in the house which has micro-USB port and all of them are using 1A. I'm wondering what repricussions I can have if I add 2A charger to the mix and will charge old devices with 2A charger and vice a versa charge S4 with 1A?
Click to expand...
Click to collapse
It will be fine, I charge all my devices from my ipad 3 10W/2A @5V wall charger. Bringing one charger while travelling reduces the clutter I have to pack.
Basically if your devices are working properly, they will only pull the power they need to charge. The S4's 2A charger is capable of supplying up to 2A's but is fine supplying less if the device your charging uses less.
The actuall charging circuitry that controls the battery charging is in the phone or device, not the wall unit. The wall unit is simply the power supply.

As acruxksa mentioned, you'll be fine since the device is in control of how much power it pulls from the charger (as long as it is working properly, that is). The only thing that you may notice is when you are charging the Galaxy S4 with the older 1.0A charger it may charge slower.
Have a great day.

krsskenn said:
As acruxksa mentioned, you'll be fine since the device is in control of how much power it pulls from the charger (as long as it is working properly, that is). The only thing that you may notice is when you are charging the Galaxy S4 with the older 1.0A charger it may charge slower.
Have a great day.
Click to expand...
Click to collapse
And if in doubt, look at it this way; the phones will charge off a USB port on a computer - this is 500ma (0.5A) - so as long as your device will charge off a usb port, it will charge off a wall charger that supplies at least that much amperage. New iPads will not charge off USB ports, but it doesn't hurt them to plug them in.

Charging time
artisticcheese said:
Hello,
Just noticed that S4 comes with 2A charger while S3 come with 1A charger. I have place where I charge a bunch of different devices in the house which has micro-USB port and all of them are using 1A. I'm wondering what repricussions I can have if I add 2A charger to the mix and will charge old devices with 2A charger and vice a versa charge S4 with 1A?
Click to expand...
Click to collapse
Yes it does but as the previous reply said it takes longer.
I used the old s3 cable at the office charging s4 but it takes long time to get the battery % up. It usually takes my s4 from 1% to 100% within an hour and half time but with the s3 cable it takes good 3 -4 hour or so.
I wouldn't take the s3 cable for travelling though. it will take too long for me to charge in coffee shops and what not when I am moving around the destinations.
So far, I am very impressed with the charging time of S4.. Love the device.

acruxksa said:
It will be fine, I charge all my devices from my ipad 3 10W/2A @5V wall charger. Bringing one charger while travelling reduces the clutter I have to pack.
Basically if your devices are working properly, they will only pull the power they need to charge. The S4's 2A charger is capable of supplying up to 2A's but is fine supplying less if the device your charging uses less.
The actuall charging circuitry that controls the battery charging is in the phone or device, not the wall unit. The wall unit is simply the power supply.
Click to expand...
Click to collapse
I don't understand why all current control is on device itself why not manufacturers just suppl 3A chargers for all the phones since it can be used for any device out there.

alphadog00 said:
And if in doubt, look at it this way; the phones will charge off a USB port on a computer - this is 500ma (0.5A) - so as long as your device will charge off a usb port, it will charge off a wall charger that supplies at least that much amperage. New iPads will not charge off USB ports, but it doesn't hurt them to plug them in.
Click to expand...
Click to collapse
That's how I rationalized using my One S chargers
---------- Post added at 08:52 PM ---------- Previous post was at 08:43 PM ----------
artisticcheese said:
I don't understand why all current control is on device itself why not manufacturers just suppl 3A chargers for all the phones since it can be used for any device out there.
Click to expand...
Click to collapse
Good question. Maybe because the higher amp batteries have not been out that long compared to all the years smartphones have been sold. They may start making 3A only. Also, companies may sell less chargers if one size fits all. No need to buy a new one when you change phones.
I do know when I charge the S4 with my One S charger it does take longer, as mentioned, and very slow off USB. The One S charger end also gets somewhat warm charging the S4. The S4 charger does not. That would lead me to believe it is pulling a little more current than charger was designed for. But, probably not an issue. USB does not get warm. But, is a good quality one and heavily shielded.

artisticcheese said:
I don't understand why all current control is on device itself why not manufacturers just suppl 3A chargers for all the phones since it can be used for any device out there.
Click to expand...
Click to collapse
In case someone buys a 10amp cheap charger and ends up frying the phone. Thus Samsung protects it self from dummy users and from million dead phones warranty swaps.
I'm using a USB car charger that puts out 2.1amps and its super fast. USB 2.0 on my laptop takes a while to charge it. Some times I use iPhone charger with Nokia cable or with WD hard drive USB wire. They all work just fine but charge at different rate.
Sent from my SAMSUNG-SGH-I337 using xda app-developers app

artisticcheese said:
I don't understand why all current control is on device itself why not manufacturers just suppl 3A chargers for all the phones since it can be used for any device out there.
Click to expand...
Click to collapse
The bigger the charger, more expensive it is. Manufacturers want to save money.

Wow. Way to necro this thread...

Necro--
Damn, thank goodness for Urban Dictionaries for OLD farts--
Had to look that one up

so if i will charge my S3 with a 2A charger i wont see any major change from the 1A, correct? I have the Boeffala kernel and at the AC charge is set to 1,1A so if i have a 2A charger i guess it should charge faster.

The phone will only draw the maximum it can. The 2A charger will charge it at the same speed as the 1A charger.
Sent from my SAMSUNG-SGH-I337 using XDA Premium 4 mobile app

Red_81 said:
The phone will only draw the maximum it can. The 2A charger will charge it at the same speed as the 1A charger.
Sent from my SAMSUNG-SGH-I337 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Maybe it is a placebo effect, but when I charge my S3 with my S4's charger it does seem faster. Quite a few of my coworkers that have used my S4 charger at work also thought it charged faster.
Either way I have charged my S3 with it very often with no I'll effects, so OP you should be safe to do so.
Sent From My Spiderman,Ironman,Red,Dark Blue,Green, GreyedOut BadAss Themed I337

Install battery monitor widget and you will be able to see how much it's pulling on each charger
Sent from my SAMSUNG-SGH-I337 using XDA Premium 4 mobile app

compatible charger

OK.... so i wanna know is it bad if i charge this phone with samsung adaptive charger ? and what about AUKEY USB-C Car Charger with 5V/3A USB C & Quick Charge 3.0?
My another problem is when i use oem charger my phone getting really hot like the back panel 110 degrees till almost 90% and then start cooling down, but i dont have this problem with samsung charger and my phone still charge pretty quick.
is anyone has the same situation?

The phone uses USB-C power delivery for charge spec. QC3 chargers don't work at all on my PH-1, seriously charges at .5amps. You're fine to use the Samsung charger or any other adaptive charger like Ankar power port chargers, they work fine.
Not sure about your phone getting hot using the stock charger though, mine doesn't do that.

bavarianblessed said:
The phone uses USB-C power delivery for charge spec. QC3 chargers don't work at all on my PH-1, seriously charges at .5amps. You're fine to use the Samsung charger or any other adaptive charger like Ankar power port chargers, they work fine.
Not sure about your phone getting hot using the stock charger though, mine doesn't do that.
Click to expand...
Click to collapse
So the phone will charge with an old USB Type-A charger and a Type-A to Type-C cable? What if it's not a QC3 charger like my Anker PowerDrive 2? I've read that some peoples phones charge slower than it uses power when using older chargers, but then some people say they charge ok, slower, but not that slow.

DrvLikHell said:
So the phone will charge with an old USB Type-A charger and a Type-A to Type-C cable? What if it's not a QC3 charger like my Anker PowerDrive 2? I've read that some peoples phones charge slower than it uses power when using older chargers, but then some people say they charge ok, slower, but not that slow.
Click to expand...
Click to collapse
Yeah the power port chargers work just fine. Just not QC3 chargers, in my experience.

Is there no way to charge faster than ~250mA using "conventional" charging methods?

Is there no way to charge faster than ~250mA using "conventional" charging methods?
sorry for the newbie question, but i am loving this phone so far EXCEPT i have never been able to charge it to more than 60% so far because i dont have the original charger. and every single other method i've tried charges it around 200mA (measured by ampere) and it only goes up around 10% after 10 hours of charging
previously, i use a LG G3 and i get 1000mA via various methods like:
-plugging it into the computer's USB3 or USB2 port on the charging only mode
-using older "fast" chargers that range between 1.5A to 2.0A
I'm using a standard USB-C cable (bought from amazon) with the above
if i dont get the "newer" chargers, is there any way i can still charge the essential to a "reasonable" speed?

You can use one of the power delivery chargers (Anker, Aukey, etc) on Amazon. They will fast charge the PH-1. The charger for Chromebook Pro and MacBook also works well. Might also be able to get a replacement charger from Essential depending on where the phone was originally purchased. They sent me a free replacement charger and cable after the original charger stopped working.
Sent from my PH-1 using Tapatalk

seabro01 said:
You can use one of the power delivery chargers (Anker, Aukey, etc) on Amazon. They will fast charge the PH-1. The charger for Chromebook Pro and MacBook also works well. Might also be able to get a replacement charger from Essential depending on where the phone was originally purchased. They sent me a free replacement charger and cable after the original charger stopped working.
Click to expand...
Click to collapse
https://shop.essential.com/products/fast-charger
Sent from my PH-1 using XDA Labs

avd said:
https://shop.essential.com/products/fast-charger
Sent from my PH-1 using XDA Labs
Click to expand...
Click to collapse
I'm assuming "if I don't buy one of the newer chargers" means they don't want to purchase the official charger from Essential.
Sent from my ONEPLUS 3T using Tapatalk

It sounds like you need a new cable or power brick, the cable being the likliest point of failure.

geminihc said:
sorry for the newbie question, but i am loving this phone so far EXCEPT i have never been able to charge it to more than 60% so far because i dont have the original charger. and every single other method i've tried charges it around 200mA (measured by ampere) and it only goes up around 10% after 10 hours of charging
previously, i use a LG G3 and i get 1000mA via various methods like:
-plugging it into the computer's USB3 or USB2 port on the charging only mode
-using older "fast" chargers that range between 1.5A to 2.0A
I'm using a standard USB-C cable (bought from amazon) with the above
if i dont get the "newer" chargers, is there any way i can still charge the essential to a "reasonable" speed?
Click to expand...
Click to collapse
I'm using the following and all work fine:
LG G6 factory charger
Essential Factory Charger
Aukey wall charger with Quick Charge 3.0
https://smile.amazon.com/gp/product/B01FJ5TMC2/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
AUKEY Amp USB Charger with USB C Port & 4 USB Ports
https://smile.amazon.com/gp/product/B01DZ4KHYQ/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
You need to buy a charger that supports Quick Charge if you want to charge rapidly.
Otherwise figure on nothing more than about 500mA.
At 500mA from empty figure 6 hours to charge.
Buy a charger.